Can not scan with my HP printer. Printing works fine

Installation of the printer/scanner didnt go flawlessly, but I got the printer function installed with the HP device manager. (I didnt use CUPS, nor did I find out how to activate it, by the way…)

HP-uiscan does not work though and I cant find any settings for it either.Is there a seperate settings menu for HP-uiscan somewhere?
Should I perhaps install another scanning program? I have read about another user who did just that, but to no avail…